Retirement Plans (Retirement Plans, Funded Status) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Expense for the defined contribution plans for continuing operations	$ 347,000,000	$ 313,000,000	$ 293,000,000
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at end of period	1,200,000,000	1,200,000,000
Fair value of plan assets at end of period	891,000,000	887,000,000
Funded status at end of period	347,000,000	268,000,000
Accumulated benefit obligation at end of period	1,200,000,000	1,100,000,000
Amounts recognized on the Consolidated Balance Sheets
Accrued employee compensation and benefits	22,000,000	17,000,000
Employee compensation and benefits	325,000,000	251,000,000
Pension plans in which projected benefit obligation exceeded plan assets
Projected benefit obligation	1,232,000,000	1,123,000,000
Fair value of plan assets	884,000,000	854,000,000
Pension plans in which accumulated benefit obligation exceeded plan assets
Accumulated benefit obligation	1,120,000,000	1,046,000,000
Fair value of plan assets	860,000,000	854,000,000
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	891,000,000	887,000,000
Foreign Pension Plans, Defined Benefit | Equity funds (a)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	320,000,000	247,000,000
Foreign Pension Plans, Defined Benefit | Bond funds (b)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	267,000,000	118,000,000
Foreign Pension Plans, Defined Benefit | alternatives fund [Domain]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	148,000,000
Foreign Pension Plans, Defined Benefit | Real Estate Funds [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	86,000,000
Foreign Pension Plans, Defined Benefit | Alternatives fund (c)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		13,000,000
Foreign Pension Plans, Defined Benefit | Corporate bonds
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		110,000,000
Foreign Pension Plans, Defined Benefit | United States equity securities
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		139,000,000
Foreign Pension Plans, Defined Benefit | Non-United States equity securities
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		165,000,000
Foreign Pension Plans, Defined Benefit | Other assets
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	70,000,000	95,000,000
Foreign Pension Plans, Defined Benefit | Level 1
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	6,000,000	306,000,000
Foreign Pension Plans, Defined Benefit | Level 1 | Equity funds (a)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	0	0
Foreign Pension Plans, Defined Benefit | Level 1 | Bond funds (b)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	0	0
Foreign Pension Plans, Defined Benefit | Level 1 | alternatives fund [Domain]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	0
Foreign Pension Plans, Defined Benefit | Level 1 | Alternatives fund (c)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		0
Foreign Pension Plans, Defined Benefit | Level 1 | Corporate bonds
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		0
Foreign Pension Plans, Defined Benefit | Level 1 | United States equity securities
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		139,000,000
Foreign Pension Plans, Defined Benefit | Level 1 | Non-United States equity securities
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		165,000,000
Foreign Pension Plans, Defined Benefit | Level 1 | Other assets
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	6,000,000	2,000,000
Foreign Pension Plans, Defined Benefit | Level 2
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	784,000,000	547,000,000
Foreign Pension Plans, Defined Benefit | Level 2 | Equity funds (a)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	320,000,000	247,000,000
Foreign Pension Plans, Defined Benefit | Level 2 | Bond funds (b)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	197,000,000	118,000,000
Foreign Pension Plans, Defined Benefit | Level 2 | alternatives fund [Domain]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	148,000,000
Foreign Pension Plans, Defined Benefit | Level 2 | Alternatives fund (c)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		13,000,000
Foreign Pension Plans, Defined Benefit | Level 2 | Corporate bonds
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		110,000,000
Foreign Pension Plans, Defined Benefit | Level 2 | United States equity securities
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		0
Foreign Pension Plans, Defined Benefit | Level 2 | Non-United States equity securities
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		0
Foreign Pension Plans, Defined Benefit | Level 2 | Other assets
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	33,000,000	59,000,000
Foreign Pension Plans, Defined Benefit | Level 3
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	101,000,000	34,000,000
Foreign Pension Plans, Defined Benefit | Level 3 | Equity funds (a)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	0	0
Foreign Pension Plans, Defined Benefit | Level 3 | Bond funds (b)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	70,000,000	0
Foreign Pension Plans, Defined Benefit | Level 3 | alternatives fund [Domain]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	0
Foreign Pension Plans, Defined Benefit | Level 3 | Alternatives fund (c)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		0
Foreign Pension Plans, Defined Benefit | Level 3 | Corporate bonds
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		0
Foreign Pension Plans, Defined Benefit | Level 3 | United States equity securities
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		0
Foreign Pension Plans, Defined Benefit | Level 3 | Non-United States equity securities
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period		0
Foreign Pension Plans, Defined Benefit | Level 3 | Other assets
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of period	$ 31,000,000	$ 34,000,000
United Kingdom Pension Plan
Pension plans in which accumulated benefit obligation exceeded plan assets
United Kingdom pension plan percentage of international pension plans' projected benefit obligations	80.00%